Our class had a discussion about protecting the environment. Here is my opinion.
I think the environment is one of our biggest worries. It was found out that a lot
of air pollution is actually caused by ordinary people, not just by big factories.
There are　so many things each one of us can do every day. It’s best for people
to take　buses or walk instead of driving cars. We should stop to use plastic bags
for shopping. We can cut down on waste, recycle trash and eat more natural food.
In these ways we can save energy and reduce pollutions.